Pneumatic displacement device



Jan. 31, 1928.

F. T. HASTINGS PNEUMATIC DISPLACEMENT DEVICE Filed Feb. 1927 E W a 2 2 2 0 E 2 M M Q o 6 7/ M mAA// I JLl/I/I/l/l/l/l/Il/l/I Ill/I III I v. 0 Rd 9 I] ////I I If! Ii 1/ I I fi/ff/ v M 2 M .0

Patented Jan. 31, 1928.

UNITED STATES PATENTQQFFIC'? g FRANK TULLER HASTINGS, OFAMARILLO, TEXAS, ASSIGNOROFONE-TENTH TO WIL- LIAM N. THOMPSON AND 0NE-TENTH TO JOHN'L. FRANCIS, BOTH OF AMARILLO, TEXAS, AND ONE-TENTH'TO ROSA E. HARRIS, OF SAN JOSE, CALIFORNIA.

PNEUMATIC DISPLACEMENT DEVTGE.

Application fled February 19, 19 21, :S er ial N... 169,569. V

This invention relates to devicesfor rais ing liquid, such as oil, from very deep wells, by means of pneumatic pressure; and it consists of a valve and displacement barrel secured on the lower end of the pressure pipe,

and constructed as hereinafter fully described and claimed.

In the drawings, Figure 1 is a side view of a pneumatic displacement device constructed according to this invention. Fig. 2 is a vertical section through the device. Fig. 3 is a cross-section, taken on the line 3-3 in Fig. 1.

In wells, such as oil wells, which are too deep to permit the use of ordinary pumping apparatus, a pipe 6 is provided for conduct ing pressure fluid, such as air, steam or gas, to the bottom of the well. This pipe 6 is ar ranged vertically in the well, and is supplied with pressure fluid from any approved source.

According to the present invention the pipe 6 has a screw-threaded portion-7.

formed on its lower end portion, and has out-let holes 8 formed in its sides at a predetermined distance above its end. A valve seat 9 is secured inside the pipe 6 a little above the holes 8, and a check valve 10 is provided below the valve seat; This check valve'is preferably a ball valve, and it is provided to prevent anything, such assand or oil, from passing up the pressure pipe. A displacement barrel 12 is screwed on the lower end portion of the pressure pipe 6,

and the bottom end of this barrel is closed by a screwthreaded plug 4, which is adapted to rest on the bottom of the well. The barrel 12 extends upwardly for a predetermined distance above the level of the valve seat around the pressure pipe, and an annular chamber 15 is formed between these two parts.

Tapering projections or fingers 16 are formed around the top of the barrel 12, and their points are bent or curved inwardly towards the pipe 6, so that outlets 17 for pressure fluid are formed around the pipe 6 at the top of the barrel, and so that the barrel is retained in position. A helical spring 18 is arranged between the check valve 10 and the plug l l,and normally holds the check 2 valve against its seat. r

The pressure fluid forced down the pipe 6. opens the check valve, and passes upwardly through the annular chamber 15 and the outlets 17, and raises the oil or other liquid in the well by pneumatic displacement.

This device is particularly useful when used for thick oil which contains paraifines, which are liable to clog up displacement devices such as frequently used. The pressure of t the fluid which is forced down the pipe 6 is directed upwardly against the oil at a. little distance above the bottom of the well, and the bent fingers prevent solid matter from being forced into the annular chamber. The check valve prevents all fine sand, oil

or water, from being forced upwardly in the pressure pipe 6, andwhen a device of this construction is provided, it is found to materially increase the production of oil from an oil well.

A packing disk 20 is preferably secured around the barrel 12, and is held in place by wire stays 21. This disk has one or more holes 22 in it, and each hole has a valve 24: which opens upwardly and is retained in a cage 25. The disk substantially fits the well, and relieves the pay sand at the bottom of the well from undesirable pressure, and lets the oil pass upwardly through the holes 22. p

What I claim is:

1. A pneumatic displacementdevice, comprising a pressure pipe, a displacement barrel secured around and communicating with the lower port-ion of the pressure pipe and having inwardly bent fingersat its top which form outlets and which retain the barrel in position, and a check valve which normally closesthe communication between the upper part of the pressure pipe and the displacement barrel.

2. A pneumatic displacement device, C0111" prising a pressure pipe, a displacement barrel secured around and communicating with the lower portion of the pressure pipe and having an outlet at its upper part,.a check valve which normally closes the communication between the upper part of the pressure pipe and the displacement barrel, and a packing disk arranged outside the displacement barrel between its ends and provided with a passage having a valve which opens upwardly.

3. A pneumatic displacement device as set forth in claim 2, the said packing disk being provided with stays spaced apart around its periphery and secured to the displacement barrel.

4. A pneumatic displacement device, comprising a pressure pipe having an internal valve seat above its lower end and a lateral outlet below the valve seat, a displacement barrel secured around the pressure pipe below its lateral outlet and having an outlet at its upper part, a plug engaging with the bottom part of the displacement barrel and closing it and the pressure pipe, 11 check valve, and a helical spring arranged between the check valve and plug and pressing the valve upwardly on the valve seat.

5. A pneumatic displacement device, comprising a pressure pipe having a lateral outlet, a displacement barrel having its lower end portion screwed on the pressure pipe below its lateral outlet and projecting below its bottom end. said barrel having inwardly bent fingers at its top which form outlets, anda plug screwed into the projecting bottom end portion of the displacement barrel and closing it and the pressure pipe.

In testimony whereof I have afiixed my signature.

FRANK TULLER HASTINGS. 

